13 research outputs found
HYPNOTIC EFFECTS OF SB-649868, AN OREXIN ANTAGONIST, AND ZOLPIDEM IN A MODEL OF SITUATIONAL INSOMNIA
O familiar acompanhante no cuidado ao adulto hospitalizado na visão da equipe de enfermagem
O estudo teve como objetivo descrever e analisar a inserção do familiar acompanhante no processo de cuidar do doente adulto hospitalizado na ótica da equipe de enfermagem. Trata-se de uma pesquisa qualitativa, realizada em uma unidade de clínica médica adulto, de um hospital universitário do interior do Rio Grande do Sul, com a participação de 14 membros da equipe de enfermagem. Para a produção dos dados, utilizou-se o Método Criativo e Sensível (MCS). Na análise dos dados foram utilizados alguns pressupostos da análise de discurso francesa. Os temas desvelados foram: a presença indispensável do familiar acompanhante; aspectos relacionados à singularidade do acompanhante; a falta de comprometimento do acompanhante. Conclui-se que é importante o reconhecimento da singularidade dos acompanhantes pelos profissionais de enfermagem, para que possam compreender suas idiossincrasias e assim inseri-los ou não nos cuidados, aceitando os limites e as possibilidades de cada um no processo de cuidar do doente
Differential Effects of a Dual Orexin Receptor Antagonist (SB-649868) and Zolpidem on Sleep Initiation and Consolidation, SWS, REM Sleep, and EEG Power Spectra in a Model of Situational Insomnia.
Orexins have a role in sleep regulation, and orexin receptor antagonists are under development for the treatment of insomnia. We conducted a randomised, double-blind, placebo-controlled, four-period crossover study to investigate the effect of single doses of the dual orexin receptor antagonist SB-649868 (10 or 30 mg) and a positive control zolpidem (10 mg), an allosteric modulator of GABA(A) receptors. Objective and subjective sleep parameters and next-day performance were assessed in 51 healthy male volunteers in a traffic noise model of situational insomnia. Compared with placebo, SB-649868 10 and 30 mg increased total sleep time (TST) by 17 and 31 min (p<0.001), whereas after zolpidem TST was increased by 11.0 min (p=0.012). Wake after sleep onset was reduced significantly by 14.7 min for the SB-6489698 30 mg dose (p<0.001). Latency to persistent sleep was significantly reduced after both doses of SB-6489698 (p=0.003), but not after zolpidem. Slow wave sleep (SWS) and electroencephalogram (EEG) power spectra in non-REM sleep were not affected by either dose of SB-640868, whereas SWS (p< 0.001) and low delta activity (<=1.0 Hz) were increased, and 2.25-11.0 Hz activity decreased after zolpidem. REM sleep duration was increased after SB-649868 30 mg (p=0.002) and reduced after zolpidem (p=0.049). Latency to REM sleep was reduced by 20.1 (p=0.034) and 34.0 min (p<0.001) after 10 and 30 mg of SB-649868. Sleep-onset REM episodes were observed. SB-649868 was well tolerated. This dual orexin receptor antagonist exerts hypnotic activity, with effects on sleep structure and the EEG that are different from those of zolpidem
Characterization of a 7% carbon dioxide (C02) inhalation paradigm to evoke anxiety symptoms in healthy subjects
The present study is aimed at characterizing the carbon dioxide (CO2) procedure in healthy subjects to achieve reliable provocation of anxiety symptoms. Thirty healthy subjects inhaled in single-blind both compressed air and 7% CO2 mixture. Panic Symptom List (PSLIII-R), Visual Analogue Scale-Anxiety (VAS-A), State Anxiety Inventory (STAI-Y/1), respiratory parameters and skin conductance were measured. 'Responders' were classified depending on PSLIII-R scores after CO2. Twelve out of the 21 'responders' performed a second test to assess test-retest repeatability. In 21 subjects Delta%VAS-A (45.4 +/- 32.1) and PSLIII-R (pre-test 2.3 +/-2.1, post-test 17.5 +/- 8.2) but not STAI-Y/1, significantly increased during CO2 inhalation. Respiratory Rate, Minute Volume, end-Tidal CO2 and skin conductance rose in 'responders'. Repeatability was studied with Bland-Altman plots, revealing mean difference between tests close to 0 for both Delta%VAS-A and PSLIII-R. Among physiologic parameters, end-Tidal CO2 and Respiratory Rate showed good repeatability, with a within-subject CV of 9.2% and 6%, respectively. The challenge produced measurable response in healthy subjects. Good test-retest repeatability was observed in 'responders'. These data indicate that the test can be suitable for testing putative anti-panic or anxiolytic drugs in clinical studies using a within subject, crossover design
Effects of therapeutic doses of salbutamol alone and combined with beclomethasone dipropionate on airway responsiveness and cyclic AMP plasma levels in asthmatic patients
Twelve asthmatic patients received by inhalation for 2 weeks, in a double-blind, cross-over design, beclomethasone dipropionate (BDP; 600 micrograms/day) plus salbutamol (S; 900 micrograms/day), or S (900 micrograms/day) alone. Before and after each treatment course the subjects received intravenous cumulative doses of S up to 200 micrograms. In basal conditions and immediately before the next dose forced expiratory volume in 1 s (FEV1) and plasma cyclic AMP (cAMP) were measured. BDP+S treatment increased FEV1 basal values (p < 0.05) whereas inhaled S resulted in unsignificant improvement of ventilatory parameters. The slopes of the dose-response curves of FEV1 and plasma cAMP to intravenous S were unaffected by the two treatment courses. Our results suggest that DBP+S, differently from S alone, improves ventilatory function in asthmatic patients and that neither S nor S+BDP seem to affect adrenergic function
P.210 Safety, tolerability, pharmacokinetics and metabolism of balovaptan, a selective vasopressin 1a receptor antagonist, in healthy subjects
Results from 2 randomized, double-blind, placebo-controlled studies of the novel nk1 receptor antagonist casopitant in patients with major depressive disorder
10.1097/JCP.0b013e31823608caJournal of Clinical Psychopharmacology316727-733JCPY